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1978 Honda CB750F Horn Assemblies, Buttons & Wiring

Horn purchases for the 1978 CB750F can address the sounder, the control button or the dedicated branch wiring. These are separate components. The featured Joker Machine horn uses a custom mounting position, so compare its bracket and connections alongside the existing horn arrangement.

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Honda CB750 CB500 CB350 horn button

Honda CB750 / CB500 / CB350 Horn Button

$7.00 USD
12-0036
Replace a worn horn button with this Horn Button with Spring. Works as a horn button or a starter button, fitting all SOHC CB750s,...
Honda CB750F horn sub harness 38105-410-671

1977-78 Honda CB750F Horn Sub Harness ~ Replaces 38105-410-671

$10.49 USD
73-0112
Replace your CB750F horn sub harness with this Horn Sub Harness, the harness that attaches to the horns. Replaces OEM #38105-410-671.Key Features• Horn sub...
Honda CB750 black horn with bracket joker machine

Honda CB750 Black Horn with Bracket ~ Joker Machine

$59.95 USD
73-1065
Add a billet horn with this Joker Machine Brand Small Custom Black Horn with CNC-machined bracket and 2 gold mounting screws. This horn relocates...
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1978 Honda CB750F · Horns Buying guide

Choosing horn hardware, controls and branch wiring

Plan a horn change around the sounder, control and wiring already fitted. The selection combines a custom Joker Machine horn with replacement button and sub-harness options; check each component against the repair or modification being planned.

Horn parts to consider

Honda CB750 Black Horn with Bracket ~ Joker Machine Joker Machine custom black hornSmall USA-made horn 73-1065 with a CNC-machined bracket.View part 1977-78 Honda CB750F Horn Sub Harness ~ Replaces 38105-410-671 1977–78 CB750F horn sub harnessHarness 73-0112 attaches to the horns and replaces 38105-410-671.View part Honda CB750 / CB500 / CB350 Horn Button Replacement control buttonButton 12-0036 is supplied with a spring.View part

Hardware supplied with the custom horn

The horn package includes its bracket and two gold mounting screws. Account for those pieces when planning the mounting hardware, and compare the intended location with the accessories already fitted.

Check the sub-harness connection separately

The dedicated horn sub harness lists the 1977–78 CB750F. Its description does not establish a matched connection to every custom horn, so compare the chosen horn’s terminals and installation information with the wiring before ordering.

Horn selection questions

Does the Joker Machine horn retain the original mounting position?

The supplier describes relocation from the stock offset position to the frame centerline and promotes additional clearance for steering-damper installations. Check the space required by the specific horn and damper arrangement rather than assuming that benefit guarantees clearance for every custom setup.

Can the listed horn button also repair the starter control?

Yes. The product explicitly supports use as either a horn button or starter button on the 1969–78 CB750 models. Match the existing control housing before selecting it; the horn-only product title does not describe its full stated use.

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Send your model and year, plus photos of your existing part and any changes to the original setup.

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